---
id: CVE-2026-46495
title: OpenDJ is an LDAPv3 compliant directory service
summary: >-
  OpenDJ is an LDAPv3 compliant directory service. Prior to 5.1.1, the JMX RMI
  connector in
  opendj-server-legacy/src/main/java/org/opends/server/protocols/jmx/RmiConnector.java
  processes attacker-controlled credential objects before authen…
severity: critical
cvss: 9.2
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-502
vendor: OpenIdentityPlatform
product: OpenDJ
affected:
  - OpenDJ < 5.1.1
  - opendj-server-legacy < 5.1.1
patched:
  - 'org.openidentityplatform.opendj:opendj-server-legacy 5.1.1'
published: '2026-09-15'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T15:17:15.493'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46495'
references:
  - url: >-
      https://github.com/OpenIdentityPlatform/OpenDJ/commit/7e3a75903159153c877daeb2952a552701e38044
    label: security-advisories@github.com
  - url: >-
      https://github.com/OpenIdentityPlatform/OpenDJ/commit/d4a95c2e37c375756f9829c7ec43a4785b99e2e2
    label: security-advisories@github.com
  - url: 'https://github.com/OpenIdentityPlatform/OpenDJ/pull/651'
    label: security-advisories@github.com
  - url: 'https://github.com/OpenIdentityPlatform/OpenDJ/releases/tag/5.1.1'
    label: security-advisories@github.com
  - url: >-
      https://github.com/OpenIdentityPlatform/OpenDJ/security/advisories/GHSA-43x2-g84q-fmqx
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-43x2-g84q-fmqx'
tags:
  - nvd
  - cve.org
  - ghsa
  - maven
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-15T14:48:04.687911Z'
cvssSource: cna
ecosystem: maven
ingestedAt: '2026-06-29T13:24:35.506Z'
epss: 0.00731
epssPercentile: 0.52881
---

## Overview

OpenDJ is an LDAPv3 compliant directory service. Prior to 5.1.1, the JMX RMI connector in opendj-server-legacy/src/main/java/org/opends/server/protocols/jmx/RmiConnector.java processes attacker-controlled credential objects before authentication without a restrictive jmx.remote.rmi.server.credentials.filter.pattern, and RmiAuthenticator.authenticate in opendj-server-legacy/src/main/java/org/opends/server/protocols/jmx/RmiAuthenticator.java accepts an unconstrained Object array rather than a two-element String[]. When the JMX Connection Handler is enabled and its TCP listener is reachable, an unauthenticated remote attacker can submit a crafted serialized Java object and achieve code execution in the OpenDJ server process. The handler is disabled by default, and successful exploitation depends on the runtime classpath and Java version; remote code execution was demonstrated against OpenDJ 4.4.15 on JDK 11 with Jackson 2.12.6.1. This issue is fixed in 5.1.1.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-46495)

Affected packages:

- `org.openidentityplatform.opendj:opendj-server-legacy <= 5.1.0`

Patched in:

- `org.openidentityplatform.opendj:opendj-server-legacy 5.1.1`

Source: https://github.com/advisories/GHSA-43x2-g84q-fmqx